Bioleaching And Biomining(Environmental Biotechnology ) Questions and Answers

Question 1. Which one of the following is not included in the mechanism of bioleaching?
  1.    Acidolysis
  2.    Complexolysis
  3.    Redoxolysis
  4.    Hydrolysis
Explanation:-
Answer: Option D. -> Hydrolysis
Answer: (d).Hydrolysis
Question 2. Microbially catalyzed redox reaction leads to metal ________
  1.    Mobilization
  2.    Immobilization
  3.    Reduction
  4.    Oxidation
Explanation:-
Answer: Option A. -> Mobilization
Answer: (a).Mobilization
Question 3. Which of the following is the most common bacteria used for bioleaching?
  1.    Spirillum
  2.    Coccus
  3.    Bacillus
  4.    Streptococcus
Explanation:-
Answer: Option C. -> Bacillus
Answer: (c).Bacillus
Question 4. Which genera helps in bioaccumulation?
  1.    Bacillus
  2.    Aspergillus
  3.    Agaricus
  4.    Mycenae
Explanation:-
Answer: Option B. -> Aspergillus
Answer: (b).Aspergillus
Question 5. What kind of bacteria benefits the most from direct leaching?
  1.    Autotrophs
  2.    Heterotrophs
  3.    Chemotrophs
  4.    Chemolithotrophs
Explanation:-
Answer: Option A. -> Autotrophs
Answer: (a).Autotrophs
Question 6. Which of following is not a focus in conversing microbial communities to biofuel?
  1.    Substrate Flexibility
  2.    High productivity
  3.    Higher number of products in one process
  4.    Tolerance to stress
Explanation:-
Answer: Option C. -> Higher number of products in one process
Answer: (c).Higher number of products in one process
Question 7. Which of the following is the correct phosphate pathway?Which Of The Following Is The Correct Phosphate Pathway?
  1.    a
  2.    b
  3.    c
  4.    d
Explanation:-
Answer: Option A. -> a
Answer: (a).a
Question 8. At which step in the below diagram, phosphorus is released?At Which Step In The Below Diagram, Phosphorus Is Released?...
  1.    Incineration
  2.    Ash
  3.    Bioleaching
  4.    Anaerobic digestion
Explanation:-
Answer: Option D. -> Anaerobic digestion
Answer: (d).Anaerobic digestion
Question 9. What kind of pH is most suitable for bioleaching in majority of the metals?
  1.    At very low pH
  2.    At very high pH
  3.    At low pH
  4.    At high pH
Explanation:-
Answer: Option C. -> At low pH
Answer: (c).At low pH
Question 10. Which among the following is the most suitable particle size of solid waste?
  1.    Order of few tens of millimeter
  2.    Order of few tens of centimeter
  3.    Order of few tens of micrometer
  4.    Order of few tens of decimeter
Explanation:-
Answer: Option C. -> Order of few tens of micrometer
Answer: (c).Order of few tens of micrometer
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